Two singles as Leach wheels in once more.

Fair to say the crowd is not substantial at Karachi today. Barely a hum from the stands, while the England trumpeter seems to have headed off for a post-lunch snooze.

Vic Marks
Former England spinner on BBC Test Match Special

There's a 'v' formation in this field with Wood being a bit deeper and Duckett at short mid-wicket. Stokes will probably change it in a minute.

Tight over from Robinson, just the single from the first ball as Shakeel pushes him to square leg.

Shakeel has had an excellent start to his Test career, averaging 67.50 from his first two matches. He'll be hoping to continue that run at Karachi, his home ground.

Big heave from Babar!

His shot off Leach's final ball spirals into the air - Ollie Robinson at mid-off gives chase but it looks unlikely he's going to make it and so it proves - the ball plugs into the ground in front of him as he runs back towards the boundary.

Robinson is bowling at the other end and has been suffering from an upset stomach - might another fielder have made that?

England are setting one funky field for Robinson - there's a leg slip and leg gully, but no regular gully.

Consecutive fours for new batter Saud Shakeel - he dispatches Robinson with the pull shot before gobbling up a full toss to drive through the covers.

Jack Leach takes the ball at the other end.

"That's it, fellas!" is the call from Ben Foakes behind the stumps, who then lets a leg-side ball run through his gloves for a single bye.

Stephan Shemilt
BBC Sport chief cricket writer in Karachi

Image source, Getty Images

There was a presentation during the lunch break to Azhar Ali to mark his final Test for Pakistan. I'm sure he's very grateful, but he would probably have preferred it not to be after he'd just been dismissed...

Ollie Robinson resumes with the final four balls of his over.

He digs in short a couple of times, Babar works a no ball off his hip for an extra run.

For those joining us at the slightly more acceptable time of 7:40, here's a quick recap as the teams return to the field.

Pakistan won the toss in Karachi and chose to bat. Having already lost the series, they've made four changes to their line-up, while England have handed a debut to 18-year-old Rehan Ahmed. He replaces the rested James Anderson, while Ben Foakes has come in for Will Jacks.

England struck early, with Jack Leach removing Abdullah Shafique lbw. Shan Masood followed, caught by Leach from Mark Wood.

Azhar Ali, playing his last Test match, and captain Babar Azam put on a partnership of 71, but Pakistan lost Ali with the final ball of the morning session as Ali gloved Ollie Robinson to Foakes down the leg side.

South Africa's seamers made an early impact in Australia's first innings at Brisbane, reducing the hosts to 27-3. Since then, however, Steve Smith and Travis Head have rebuilt and they now have their hundred partnership.

Head is looking in fine nick, he's on 68 and is ticking over at more than a run a ball. South Africa's total of 152 is already in sight, on day one of this first Test.

You can follow the match via our scorecard here.

Jonathan Agnew
BBC cricket correspondent on Test Match Special

The first time Pakistan lost on this pitch was in 2001. It was during Ramadan and it was so dark. The sun had set and everyone was breaking their fast.

When I was 14, I'd already made a successful transition from my school year group's opening bowler to being their scorer. I revolutionised the world of south coast school scoring with my remarkable penmanship.

Two prodigious talents on different cricketing journeys. Who's to say which path is better?

(Ahmed's. Rehan Ahmed's path is better)

Thanks Matt.

You've reminded me that I've brought the remnants of my naan from last night into the office.

Of course, all BBC Sport journalists have to have a curry on a Friday night, after Lord Reith put the requirement in the charter in 1922.

Or so I'm told.

Now... is it too early for leftover curry? That's what I am pondering.

I'll leave you in the hands of Mike Peter...

Alex Hartley
Former England bowler on BBC Test Match Special

England have been expensive. They've not been able to build much pressure with the ball but they have got three wickets.

The wicket signals the end of the session.

On a flat-looking pitch, England will be very content with three wickets in the first session.

Jonathan Agnew
BBC cricket correspondent on Test Match Special

That's a very timely wicket on the stroke of lunch. England will be very pleased with that.